# coding:utf-8
# 作者：理想国真恵玩
import pandas as pd

df = pd.read_csv('data/stock.csv')
print(df['open'][:5])
print('-' * 33)
# 相加
result = df['open'].add(100)
print(result[:5])

# 相减
print('-' * 33)
result = df['open'].sub(100)
print(result[:5])
